blacksheep557

function withoutRegExp(string = '') {
    let queue = [];
    let currentString = '';
    for (let i = 0; i < string.length; i++) {
        if (string.charAt(i) === '(') {
            queue.push(currentString);
            currentString = '';
        } else if (string.charAt(i) === ')') {
            currentString = queue.pop() + currentString.split('').reverse().join('');
        } else {

blacksheep557

1
A
D,[-2]

blacksheep557

1
A
D [-2]

blacksheep557

[10,10,10,-20]
1
2
3
B
D [10,10,-20]

blacksheep557

function asteroidCollision(asteroids) {
    while (asteroids.length > 1) {
        for (let i = 1; i < asteroids.length; i++) {
            let [asteroidX, asteroidY] = [asteroids[i - 1], asteroids[i]];
            while (asteroidX > 0 && asteroidY < 0&&i>=1) {
                if (Math.abs(asteroidX) === Math.abs(asteroidY)) {
                    asteroids.splice(i - 1, 2)
                } else if (Math.abs(asteroidX) < Math.abs(asteroidY)) {
                    asteroids.splice(i - 1, 1)
                } else {

blacksheep557

function asteroidCollision(asteroids) {
    while (asteroids.length > 1) {
        for (let i = 1; i < asteroids.length; i++) {
            let [asteroidX, asteroidY] = [asteroids[i - 1], asteroids[i]];
            while (asteroidX > 0 && asteroidY < 0&&i>=1) {
                if (Math.abs(asteroidX) === Math.abs(asteroidY)) {
                    asteroids.splice(i - 1, 2)
                } else if (Math.abs(asteroidX) < Math.abs(asteroidY)) {
                    asteroids.splice(i - 1, 1)
                } else {

blacksheep557

function boxShadows(rectangles = [[]]) {
    rectangles.sort((a, b) => a[0] - b[0]);
    // console.log(rectangles);
    let linearMap = new Map();
    for (let [x, y, width, height] of rectangles) {
        let currentWidth = linearMap.get(x);
        if (currentWidth === undefined) {
            currentWidth = width + x
        } else {
            currentWidth = x + width > currentWidth ? width : currentWidth

blacksheep557

function rotateImage(imageMatrix = [[]]) {
    //transpose the matrix
    for (let row = 0; row < imageMatrix.length; row++) {
        for (let col = row + 1; col < imageMatrix[0].length; col++) {
            let temp = imageMatrix[row][col];
            imageMatrix[row][col] = imageMatrix[col][row];
            imageMatrix[col][row] = temp;
        }
    }
    // return each row reversed

blacksheep557

function splitAndDelimit(string = '', interval = 1, delimiter = '') {
    let iterator = 0;
    for (let i = 0; i < string.length; i++) {
        if (iterator === interval) {
            string = string.substring(0, i) + delimiter + string.substring(i, string.length)
            iterator = 0;
        }else{
        iterator++;}
    }
    console.log(string)

blacksheep557

line A: 1, 2, 3, 1
line B: 2, 1, 2

(0,1){
    (1,2){
    
    }!(1,2){
     
     }
}!(0,1){